直接面向驱动电路的PMSM多滑模面变结构控制

Sliding Mode Control With Multi-sliding-plane of PMSM Directed at Motor Drive Circuit

针对永磁同步电机(PMSM),传统的控制方法是在电流环和转速环采用PI调节器。由于控制方法简单,得到了广泛应用。然而,当电机内部参数发生变化或存在外部扰动时,其控制性能差。为此,提出一种直接面向驱动电路的永磁同步电机多滑模面变结构控制方法。通过电流和转速的滑模面,得到驱动电路的输入输出关系,它是关于滑模面和母线电压的非连续控制。相比双环(电流环和转速环)控制,本文所设计的控制器更简单。经过仿真分析,表明该控制器使得系统在启动阶段无超调。除此之外,还使得系统的响应更快,鲁棒性更强,动态特性更好。

For the control of permanent magnet synchronous motor, the traditional method is to adopt PI regulators in the current loop and speed loop, which is widely used because of its simplicity. However, in the case of internal changing parameter and external disturbances, the robustness of system is poor. To solve the problem, this paper proposed the method based on muhi-sliding-plane sliding mode control and the control is direct at motor drive circuit. The function relate to the input and output of motor drive circuit, which is noncontinuous control of the sliding plane and bus voltage, was obtained through the sliding plane of current and speed. Compared with the double loop control（ current loop and speed loop） , the controller designed in this paper was simpler. The simulation shows that there is no overshoot when the controller designed in this paper is implemented. In addition, the response is faster, robustness is stronger and dynamic characteristics are, better.